Why a simplified Facebook kicks Twitter's butt
See how Facebook deals with photos? As thumbs. How does Twitter do it? Urls. The web has graphics. Twitter pretends it doesn't. I saw how graphics apps kicked the butt of character-based apps in the 80s. Twitter is setting itself up for a repeat.
And that's not the only reason. It's really nice they do comments, and items are not limited to 140 characters. Until now what was protecting Twitter was its relative simplicity compared to Facebook. But this app shows that the core functionality of Facebook *is* simple.
Also, as far as I know, Facebook doesn't have a Suggested User List.